Machine for making bungs.



Patented Jan. 31, 1911.

M. MOULY MACHINE r03 MAKING Bums.

APPLICATION FILED AUG. 25, 1908.

Tu: NORRIS PETERS ca, WASHINGTON, u. c

M. MOUL.

MACHINE FOR MAKING BUNGS.

APPLICATION FILED AUG. 25, 1008.

982,980,, Patented Jan.31,1911.

8 SHEETS-$113121 2.

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M. MOUL.

MAOHINE FOR MAKING BUNGS.

APPLICATION FILED AUG. 2a, 1900.

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Witness ms mime: PETERS co., WASHINGTON. 0. c4

M. MOUL.

MACHINE FOR MAKING BUNGS.

APPLICATION FILED AUG. 25, 1908. 982,980 Patented Jan. 31, 1911 8SHEETS-$131321? 4.

M.- MOUL.

v MACHINE FOR MAKING BUNGS.

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M. MOUL.

MACHINE FOR MAKING BU-NGS.

APPLICATION FILED AUG. 25. 1908.

' 8 SHEETS-SHEET 8.

82,980, V Patented Jan. 31,-1911.

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MARTIN MOUL, F HANOVER, PENNSYLVANIA.

MACHINE FOR MAKING BUNGS.

.. To all whom it may concern:

Be it known that T, MARTIN MoUL, a citizen of the United States,residing at Hanover, county of York, and State of Pennsylvania, haveinvented certain new and use-. ful Improvements in Machines for MakingBangs, of which the following is a specification.

This invention relates to machines for making bungs.

The present invention has for its objects the provision of a machine ofnovel construction which will automatically manufacture bungs from flatblanks, previously cut into the desired shape in any preferred manner,carrying on the manufacture by a series of operations of certain novelinstrumentalities consisting mainly of a feeder adapted to antomaticallyfeed the blanks one at a time, automatic gripping and centering devicesadapted to grasp the blank as it is fed, a cutter, means for moving thegripping and centering device and the cutter in relation to each otherto bring them into a predetermined relative position, and means forrottating the gripping device when the parts are in that position,whereby the cutter will round the blank into the shape of the bung, andfor restoring the parts to normal posi tion so that the completed bungis ejected and another bung fed to the centering and gripping devices.

In carrying out the foregoing objects, certain instrumentalities areprovided which are set forth in detail hereinafter, but as a wide rangeof equivalent mechanical elements or appliances could be employed, I donot intend to limit my claims to the precise mechanical structureshereinafter described and set forth in the accompanying drawings, exceptwhere specified in the claims.

In the accompanying drawings :Figure l is a side elevation; Fig. 2, anend elevation; Fig. 3, a plan, with the blank hopper or rack in section;Fig. 4, an enlarged detail plan of the principal parts of Fig. 3; Fig.5, a detail plan of the feeder slide; Fig. (3, an enlarged detailperspective of the master or cam shaft and the various cams foroperating the different mechanisms; Fig. 7, an enlarged detail endelevation of the lower part of the movable frame carrying the grippingmechanism, parts of the operating mechanism therefor, and the rack andpinion operating device; Figs. 8, 9 and 10, details of the rack, pinionand ratchet mecha- Specification of Letters Patent.

Application filed August 25, 1908.

Patented Jan. 31, 1911.

Serial No. 450,150.

nism; Fig. 11, an enlarged detail of the details of the centering orgripping devices for the blank; and Fig. 14, a detail of the connectingrod which operates the feeder slide.

t one end of the frame 1 is the driving shaft 2 having fast and loosepulleys 3 to be belted to a suitable countershaft or motor and a mainpulley 4 Which is directly connected by belt 5 to the arbor 6 of acombined saw and cutter 7 This saw cuts and trims the blanks which arepresented thereto by the centering or gripping mechanism herelnafterdescribed. The arbor is carried by a box on a frame 8, which isadjustable transversely of the main frame by virtue of bolt and slotconnections 9 thereto, whereby the saw and cutter may be differentlypositioned at different times to cut the bung to dilferent desireddiameters.

The remaining mechanisms of the machine are operated by a transverseshaft 10 carrying a belt pulley 11, which is connected by belt 12 toshaft 2, said shaft 10 having a worm 13 which meshes with a worm-wheel14 on the master or cam shaft 15 (Fig. 6), whereby the variousmechanisms are driven. A belt tightener 16, controlled by a lever 17which may be hung up by a catch 18 affords means for quickly releasingor tensioning the belt 12, whereby all parts of the machine except thesaw and cutter may be stopped or started.

Blair/c feeding mcchamc'sm.Disposed at one side of the main frame,supported by brackets, is a bed 19 (Figs. 2, 3 and 4) having guideways20, in which is adapted to slide, transversely of the machine, thefeeder slide 21 (Fig. 5), the normal position of which is shown in Figs.2, 3 and 4, and the advanced position delivering the blank to thegripping or centering mechanism, in dotted lines in Fig. 4.-. Thisfeeder slide is provided with a blank holder 22, which is a recess inthe top of the feeder having walls 23 which are disposed at right anglesto each other, the bottom of the recess being cut out, as shown at 24,so that the centers of the gripping device may be received thereinwithout contact with the feeder slide to enable the blank to bedelivered with its center to the central part of the grippers orcenterers. Overhanging the feeder slide are frames 25 which have seatsto which the lower ends of hopper frame-pieces 26 are dogging device;Figs. 12. and 13, enlarged the blank to the gripping and centeringmechanism, the smooth top 28 of the feeder slide passes under andsustains the blanks in the hopper and on the return of the slide tonormal position, the lowermost blank .drops into the seat 22. To limitthe outward movement of the feeder slide, a stop 29 (Figs. 3 and 4) isprovided on the bed 19.

The feeder slide 21 is provided with a rack 30 on its lower face whichis engaged by a racked rocker 31 secured to a rockshaft 32 (Figs. 1 and2), said shaft having an arm 33 to which a coil spring 34 connected tothe frame 1, is attached, whose function is to retract the feeder slide.The

- rock-shaft 32 may carry a sprocket 35 for connection to a suitableregister, if it is de sired to register the number of blanks deliveredby the feeder slide.

The rock-shaft 32 is provided with a slotted arm 36 (Figs. 1, 3, 4) inthe slot of which is secured a wrist pin 37, with which is engaged thearch 38 of a connecting rod 39, which is normally held in suchengagement by a weight 40 (Fig. 2) secured to a cord 41 (Fig. 14) whichis attached to a lip 42. The connecting rod has a hand-piece 43 whichmay be grasped by the operator to pull the connecting rod outwardly sothat further movement of the wrist pin 37 will v cause it to disengageautomatically from the wrist pin 37 when it is desired to stop theoperation of the feeding mechanism, the lip 42 being then rested on thewrist pin.

One side 38 of the arch 38 is inclined so that when an abnormal pressureis brought against the wristpin 37 caused by a choking up of the blanksin the hopper, said part 38 will slide up on the pin and prevent furtheroperation of the feeding mechanism, the lip '42 permitting theconnecting rod 39 to rise no higher than may be required to cause itsdisengagement from the pin 37. The incline 38 is of such degree that theweight 40 will, under normal conditions, cause it to engage the pin 37and operate the feeder. The connecting rod is pivoted to a rocker 44(Figs. 1, 2 and 4) by an adjustable bolt which passes through the slot45 (Fig. 14) of the connecting rod, by means of which the throw iof theconnecting rod may be Varied. The

rocker arm 44 is secured to a rock-shaft 46 (Figs. 1, 3, 4 and 6), thisrock-shaft being provided with an actuating arm 47 which has a bowl 43adapted to coiiperate with a cam 49 on the master shaft 15. The profileof this cam forms less than one-half of the path of the bowl, therebygiving a comparatively long dwell so that the feeder slide 21 willremain stationary in the position shown in Figs. 1, 2, 3 and 4, whilethe operations of directing the blank to the saw or cutter, its trimmingor cutting, and final return to normal position, are being carried on,and the cam profile is such that the feeder slide relatively rapidlyadvances, dwells until the centerer or gripper can grasp the blank, andthen relatively rapidly retreats. To keep the bowl on the cam, there isprovided a spring-depressed rod 51 (Figs. 1, 3, 4 and 6).

Blank centering and gripping, (logging, and trrmsfewmgmechanisms.Disposed vertically and ournaled in suitable bearings on theframe 1 is a shaft 52 (Figs. 2, 4 and 7) on which is hinged a frame 53whose free end which is disposed adjacent the blank hopper, is adaptedto swing toward the saw and cutter, as shown by dotted lines in Fig. 4for the purpose of presenting the blank to said saw and cutter. Theupper and lower parts of the free end of this frame carry the combinedcentering and gripping devices 54 and 55 (Fig. 12), both of which areslidable vertically in bearings 56 and 57. The lower gripping andcentering device 55 has points 58 to engage the blank and is providedwith a spring-actuated blank-ejecting center 59, which is depressed whenthe blank is centered, but when the grippers are separated after theblank has been sawed into tapering form, releases the finished bung fromits engagement with the points 13). The lower gripping device 55 iscarried by a spindle 6O ournaled and slidable in the bearing 57 andcarries a sprocket wheel 61, which is connected by a sprocket chain 62to a sprocket wheel 63 on the vertically arranged shaft Having itsbearing adjustably carried on the frame 1 so that it may be moved towardor away from the inner stretch of the sprocket chain 62, is an idlersprocket wheel 64 which tends to tighten the sprocket chain as the frame53 swings toward the saw and cutter. The upper gripper 54 is carried bya stem 65, which is suitably journaled so that the gripper and stem mayturn with the blank and lower gripper and centerer 55. Surrounding thestem 65 and bearing against a shoulder thereon and also bearing on theframe 1 is a coil spring 66 whose function is to raise the gripper 54.

Pivoted to an upwardly extending arm on the swinging frame 53 is a lever67 (Figs. 2, 3 and 4) which has a swiveled connection 68 with the stem65 at one end, and its other end is connected by a rod 69 to a rocker 70 (Fig. 2). Pivoted at 71 to the lower part of the swinging frame 53 isa lever 72, which has a yoke which is swiveled at 73 to the lower end ofthe spindle 60. A rocker 74 journaled to the frame 1, (Figs. 1 and 7)which has a forked end cooperating with the outer end of the lever 72when the frame 53 swings to and fro steadies and braces said lever whenthe bung is being trimmed. The rocker is connected by a rod 75 to theslotted inner end of the lever 72, whereby the levers G7 and 72simultaneously operate to cause simultaneous raising of the lowergripper and depression of the upper gripper or simultaneous separationthereof. The adjustable connection between the rod 75 and lever 72affords means for changing the relative movement of the grippers, andthe slot in the lever 72 receives a wrist pin 7 (3 adjustably carried inthe slot 77 in the rocker arm 78 (Fig. 7) carried by rock-shaft 7 S)which runs lengthwise of the frame 1 (Fig. 3) and is provided with anarm 80 pressed upwardly by a spring actuated rod 81 (Fig. 1) andprovided with a bowl 32 which cooperates with a cam 83 (Fig. 6) having aprofile provided with sharp inclines which are adapted to causerelatively quick depression of arm 80 and consequent relative rapidchucking of the blank between the centerers and grippers when the blankis presented thereto, and to cause relatively rapid separation of saidgrippers or centerers, the dwell part 85 of this cam being of relativelygreat length so that the bowl 82 will remain on said dwell during thetime the swinging frame 53 is moved to bring the blank in position to becut by the saw and cutter and while the grippers and centerers haverotated sufliciently when the blank is thus presented to the saw andcutter to insure trimming of said blank .into the desired taperedcylindrical form, it being under stood from an inspection of Fig. 2 thatthe upper part of the shaft 52 is inclined and connected to the lowerpart thereof by the coupling 52 such inclination causing correspondinginclination of the swinging frame 53 and the centerers and grippers.

Referring to Fig. 6, there is a cam 86 secured to the shaft 15, said camhaving two inclined faces 87 and an arc-shaped dwell 88 on the said camcooperating with a bowl 89 carried by an arm 90 on a rock-shaft 01(Fig. 1) journaled in suitable bearings at the side of the frame 1 andalso carrying an arm 92 (Figs. 3 and t) which has an adjustableconnection 93 with a connecting rod 94 attached to the swinging frame53. The inclines 87 of the cam 86 (Fig. 6) by cooperation with the bowl89 cause the swinging of the frame 53 toward and away from the saw andcutter and the dwell 88 is of such length that it will cause theretention of the swinging frame in the cutting position shown in dottedlines in Fig. l as long as may be necessary for the centerers 5 1 and toperform a complete revolution so that the blank will be cut and trimmedall the way around before the retreat of the frame 53 to normalposition, which is caused by the action of a spring-actuated rod 95(Figs. 3 and4).

lVhen the blank is delivered by the feeder slide 21 to the centerers andgrippers, it is desirable to dog the blank so that itmay not becomedisplaced. The dogging device is shown in detail in Fig. 11, and itsoperating mechanisms in Figs. 3, 4. and (3. The dog consists of aslidable bar 96 mounted in guides 97 on the inner side of the swingingframe 53, said dog having an angular notch 98 adapted to receive thecorner of the blank delivered to the centerers and grippers when saidblank is in proper position to be gripped. The dog has an adjustable pin90 which is received in an elongated slot 100 of an actuating lever 101,which is pivoted at 102 and carries at its opposite end a bowl 103adapted to be engaged by a wiper cam 10% on the master shaft 15, thewiper or toe of said cam being adapted to cause a relatively quickadvance of the dog when the blank is in proper position to be dogged,said cam having a relatively short dwell 105 so that immediately thefeeder slide begins to retreat; the dog does likewise. The slot 100permits the swinging of the frame 53 toward the saw and cutter withoutoperation of the dog. The bowl 103 of the lever 101 is held against thecam by a spring-actuated rod 106.

.Hoalaam'sm for rotating the centerers and grippers.Referring to Figs. 7to 10, there is rigidly secured to the shaft 52 a ratchet wheel 107,below which is a loose friction disk 108 having a friction facing 109which bears against the under side of the ratchet wheel 107. Journaledon shaft 52 is a disk 110 carrying a pawl 111, which is pivoted on a pin112 whose outward throw is limited by a stop pin 113, said pawl having abifurcated heel 11 1 into which a fin 115 on the friction disk 10S fits.Below and formed integral with the disk 110 is a pinion 117, below whichis loosely journaled on the shaft 52 a rack guide 118, a portion ofwhich receives a part of the periphery of the pinion 117 and rests upona bearing 118 on the shaft 52 (Fig. 7). Slidable through the rack guideand in mesh with pinion 117, is a rack 119 on a rod 120, which isconnected to a crank disk 121 (Fig. 6) secured to the master shaft 15.During the movements of the feeder slide, the dogging device, and thecentering and gripping devices, and until the return to normal positionof the feeder slide and the dog, the travel of the crank disk 121 in thedirection of the arrow Fig. 0, is such as to bring the rod 120 intosubthe pawl 111 riding idly on the ratchet wheel 107, there having beenno occasion for the rotation of the gripper 55, but subsequentperformance of the cycles of operations, causes the swinging frame 53 tobe pulled toward the position shown by dotted lines in F ig. t by therotation of the cam 86. Continued rotation of the shaft 15 causes thedisk 121 to pull the rod 120 around farther so that it will rotate thepinion 117 in reverse direction to its former movement.

The reverse movement of the pinion causes a reverse movement of the disk110, and the friction disk 108, being loose on the shaft 52, thefriction facing 109, by its engagement with the face of the ratchetwheel 107, causes an arrest of said friction disk so that there is aslight movement of the disk 110 in relation thereto, and as the fin onthe friction disk remains stationary, the cooperation of the fin 115with the heel llt on the pawl 111 causes said pawl to be thrown intoengagement with the ratchet wheel. At this point the blank grippedbetween the grippers is in position to be cut and trimmed by the saw andcutter. Continued retraction of the rod 120 causes the ratchet wheel,and hence the shaft 52, to be turned in the direction indicated by thearrow B in Fig. 10. which causes rotation of the sprocket wheel 03 and,through the rotation of the sprocket chain 62, rotation of the centerer55, the sprocket chain having been made taut by engagement with theidler sprocket wheel 64.

As previously explained, the dwell 88 of the cam 86 is of sufficientlength so that the frame 53 remains where swung, the continued rotationof shaft 15 causing the rod 120 and pinion and pawl and ratchet wheel tocontinue their movements until the blank has been rotated a completerevolution in position for the blank to be completely trimmed by the sawand cutter until the rod 120 gets beyond its other dead center,whereupon the reverse movement of the said rod and its rack will causethe pawl to be kicked off of the ratchet wheel and, consequently, duringthe return of the swinging frame 53 to normal position and until asubsequent blank has been carried into position to be cut and trimmed,there will be no rotation of the centerer and gripper 55.

.Vhen the swinging frame 53 reaches normal position, the bowl of theoperating lever rides off the dwell of the cam 83 and, consequently, thecenterers and grippers separate to release the finished bung which isthen automatically released from the points 58 by the blank ejectingcenter 59 and falls into a chute 122 which is secured to a bracket 123rising from the main frame 1 and loosely overlapping the swinging frame53 adjacent the centerer 55. The operations are then repeatedautomatically, a new blank being fed to the centerers and grippersimmediately after the finished bung is released therefrom.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a machine for making bungs, the combination with a cutter of aswinging frame movable toward and from the cutter, a pair of rotarygrippers which are movable axially and are carried by the swingingframe, means for rotating the grippers and for moving them axially toengage the blank, a blank feeder, a dogging device carried by andmovable in relation to the swinging frame, a pivoted lever having ayielding connection with the dogging device, whereby the frame isallowed to swing without interference toward the cutter, and a cam foroperating said lever.

2. In a machine for making bungs, the combination with a cutter, of aswinging frame movable toward and from the cutter, a pair of rotarygrippers which are movable axially and are carried by the swingingframe, means for rotating the grippers and for moving them axially toengage the blank, a blank feeder, a slidable dog carried by saidswinging frame and adapted to engage the blank when in position to begripped, a pivoted lever, a slot-and-pin connection between the leverand the slidable dog, whereby the frame is permitted to swing toward thecutter without interference, and a cam adapted to coiiperate with thelever to advance and retreat the said dog.

3. In a machine for making bungs, the combination with a swinging frame,of a cutter, means for swinging the frame toward and away from thecutter, rotary and axially movable grippers carried by the swingingframe, independent levers pivoted to the swinging frame and connected,respectively, to the grippers for shifting said grippers axially,intermediate connections between said levers, whereby the respectivegrippers are simultaneously axially shifted, and means extraneous to theswinging frame adapted for operating said levers.

4. In a machine for making bungs, the combination with a swinging frame,of a cutter, means for swinging the frame toward and away from thecutter, rotary and axially movable grippers carried by the swingingframe, independent levers pivoted to the swinging frame and connected,respectively, to the grippers for shifting said grippers axially,intermediate connections be tween said levers, whereby the respectivegrippers are simultaneously axially shifted, one of the aforesaid levershaving a slot, a

(Fig. 2). Pivoted at 71 to the lower part of the swinging frame 53 is alever 72, which has a yoke which is swivelcd at 73 to the lower end ofthe spindle 60. A rocker 7 1 journaled to the frame 1, (Figs. 1 and 7)which has a forked end cooperating with the outer end of the lever 72when the frame 53 swings to and fro steadies and braces said lever whenthe bung is being trimmed. The rocker is connected by a rod 75 to theslotted inner end of the lever 72, whereby the levers 67 and 72simultaneously operate to cause simultaneous raising of the lowergripper and depression of the upper gripper or simultaneous separationthereof. The adjustable connection between the rod 75 and lever 72affords means for changing the relative .movement of the grippers, andthe slot in the lever 72 receives a wrist pin 7 (3 adjustably carried inthe slot 77 in the rocker arm 78 (Fig. 7) carried by rock-shaft 79 whichruns lengthwise of the frame 1 (Fig. 3) and is provided with an arm 80pressed upwardly by a spring actuated rod 81 Fig. 1) and provided with abowl 82 which cooperates with a cam 83 (Fig. 6) having a profileprovided with sharp inclines which are adapted to cause relatively quickde pression of arm 80 and consequent relative rapid chucking of theblank between the centerers and grippers when the blank is presentedthereto, and to cause relatively rapid separation of said grippers orcenterers, the dwell part 85 of this cam being of relatively greatlength so that the bowl will remain on said dwell during the time theswinging frame 53 is moved to bring the blank in position to be cut bythe saw and cutter and while the grippers and centerers have rotatedsufiicientlv when the blank is thus presented to the saw and cutter toinsure trimming of said blank .into the desired tapered cylindricalform, it being under stood from an inspection of Fig. 2 that the upperpart of the shaft 52 is inclined and connected to the lower part thereofby the coupling 52*, such inclination causing corresponding inclinationof the swinging frame andthe centerers and grippers.

Referring to Fig. 6, there is a cam 86 secured to the shaft 15, said camhaving two inclined faces 87 and an arcshaped dwell 88 on the said camcooperating with a bowl 89 carried by an arm 90 on a rock-shaft 91(Fig. 1) journaled in suitable bearings at the side of the frame 1 andalso carrying an arm 92 (Figs. 3 and 4) which has an adj ustableconnection 93 with a connecting rod 9 1 attached to the swinging frameas. The inclines 87 of the cam 86 (Fig. ('3) by cooperation with thebowl 89 cause the swinging of the frame 53 toward and away from the sawand cutter and the dwell 88 is of such length that it will cause theretention of the swinging frame in the cutting position shown in dottedlines in Fig. 1 as long as may be necessary for the centerers 5 1 and 55to perform a complete revolution so that the blank will be cut andtrimmed all the way around before the retreat of the frame 53 to normalposition, which is caused by the action of a spring-actuated rod 95(Figs. 3 and 41).

When the blank is delivered by the feeder slide 21 to the centerers andgrippers, it is desirable to dog the blank so that it may not becomedisplaced. The dogging device is shown in detail in Fig. 11, and itsoperating mecaanisms in Figs. 3, at and 6. The dog consists of aslidable bar 96 mounted in guides 97 on the inner side of the swingingframe 53, said dog having an angular notch 98 adapted to receive thecorner of the blank delivered to the centerers andgrippers when saidblank is in proper position to be gripped. The dog has an adjustable pin99 which is received in an elongated slot 100 of an actuating lever101., which is pivoted at 102 and carries at its opposite end abowl 103adapted to be engaged by a wiper cam 10% on the master shaft 15, thewiper or toe of said cam being adapted to cause a relatively quickadvance of the dog when the blank is in proper position to be dogged,said cam having a relatively short dwell 105 so that immediately thefeeder slide begins to retreat, the dog does likewise. The slot 100permits the swinging of the frame 53 toward the saw and cutter withoutoperation of"the dog. The bowl 103 of the lever 101 is held against thecam by a spring-actuated rod 106.

M coiumz'sm for rotating the cc'n-tcrers and grippers.Referring to Figs.7 to 10, there is rigidly secured to the shaft 52 a ratchet wheel 107,below which is a loose friction disk 108 having a friction facing 109which bears against the under side of the ratchet wheel 107. Journaledon shaft 52 is disk 110 carrying a pawl 111, which is pivoted on a pin112 whose outward throw is limited by a stop pin 113, said pawl having abifurcated heel 11 1 into which a fin 115 on the friction disk 108 fits.Below and formed integral with the disk 110 is a pinion 117 below whichis loosely ournaled on the shaft 52 a rack guide 118, a port-ion.ofwhich receives a part of the periphery of the pinion 117 and rests upona. bearing 118 on the shaft 52 (Fig. 7 Slidable through the rack guideand in mesh with pinion 117, is a rack 119 on a rod 120, which isconnected to a crank disk 121 (Fig. 6) secured to the master shaft 15.During the movements of the feeder slide, the dogging device, and thecentering and gripping devices, and until the return to normal positionof the feeder slide and the dog, the travel of the crank disk 121 in thedirection of the arrow, Fig. 0, is such as to bring the rod intosubstantially dead center with the master shaft 15, the cooperation ofthe rack 119 with the pinion 117 causing rotation of the disk 110 in thedirection of the arrow A of Fig. 10, the pawl 111 riding idly on theratchet wheel 107, there having been no occasion for the rotation of thegripper 55, but subsequent performance of the cycles of operations,causes the swinging frame 53 to be pulled toward the position shown bydotted lines in Fig. 4 by the rotation of the cam 86. Continued rotationof the shaft 15 causes the disk 121 to pull the rod 120 around fartherso that it will rotate the pinion 117 in reverse direction to its formermovement. The reverse movement of the pinion causes a reverse movementof the disk 110, and the friction disk 108, being loose on the shaft 52,the friction facing 109, by its engagement with the face of the ratchetwheel 107, causes an arrest of said friction disk so that there is aslight movement of the disk 110 in relation thereto, and as the fin onthe friction disk remains stationary, the cooperation of the fin 115with the heel 114 on the pawl 111 causes said pawl to be thrown intoengagement with the ratchet wheel. At this point the blank grippedbetween the grippers is in positionto be cut and trimmed by the saw andcutter. Continued retraction of the rod 120 causes the ratchet wheel,and hence the shaft 52, to be turned in the di rection indicated by thearrow B in Fig. 10. which causes rotation of the sprocket wheel 63 and,through the rotation of the sprocket chain 62, rotation of the centerer55, the sprocket chain having been made taut by engagement with theidler sprocket wheel 64.

As previously explained, the dwell 88 of the cam 86 is of sufficientlength so that the frame 53 remains where swung, the continued rotationof shaft 15 causing the rod 120 and pinion and pawl and ratchet wheel tocontinue their movements until the blank has been rotated a completerevolution in position for the blank to be completely trimmed by the sawand cutter until the rod 120 gets beyond its other dead center,whereupon the reverse movement of the said rod and its rack will causethe pawl to be kicked off of the ratchet wheel and, consequently, duringthe return of the swinging frame 53 to normal position and until asubsequent blank has been carried into position to be cut and trimmed,there will be no rotation of the centerer and gripper 55.

I'Vhen the swinging frame 53 reaches normal position, the bowl of theoperating lever rides off the dwell of the cam 83 and, consequently, thecenterers and grippers separate to release the finished bung which isthen automatically released from the points 58 by the blank ejectingcenter 59 and falls into a chute 122 which is secured to a bracket 123rising from the main frame 1 and loosely overlapping the swinging frame53 adjacent the centerer 55. The operations are then repeatedautomatically, a new blank being fed to the centerers and grippersimmediately after the finished bung is released therefrom.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent, is

1. In a machine for making bungs, the combination with a cutter, of aswinging frame movable toward and from the cutter, a pair of rotarygrippers which are movable axially and are carried by the swingingframe, means for rotating the grippers and for moving them axially toengage the blank, a blank feeder, a dogging device carried by andmovable in relation to the swinging frame, a pivoted lever having ayielding connection with the dogging device, whereby the frame isallowed to swing without interference toward the cutter, and a cam foroperating said lever.

2. In a machine for making bungs, the combination with a cutter, of aswinging frame movable toward and from the cutter, a pair of rotarygrippers which are movable axially and are carried by the swingingframe, means for rotating the grippers and for moving them axially toengage the blank, a blank feeder, a slidable dog carried by saidswinging frame and adapted to engage the blank when in position to begripped, a pivoted lever, a slot-and-pin connection between the leverand the slidable dog, whereby the frame is permitted to swing toward thecutter without interference, and a cam adapted to cooperate with' thelever to advance and retreat the said dog.

In a machine for making bungs, the combination with a swinging frame, ofa cutter, means for swinging the frame toward and away from the cutter,rotary and axially movable grippers carried by the swinging frame,independent levers pivoted to the swinging frame and connected, respectively, to the grippers for shifting said grippers axially,intermediate connections between said levers, whereby the respectivegrippers are simultaneously axially shifted, and means extraneous to theswinging frame adapted for operating said levers.

a. In a machine for making bungs, the combination with a swinging frame,of a cutter, means for swinging the frame toward and away from thecutter, rotary and axially movable grippers carried by the swing ingframe, independent levers pivoted to the swinging frame and connected,respectively, to the grippers for shifting said grippers axially,intermediate connections between said levers, whereby the respectivegrippers are simultaneously axially shifted, one of the aforesaid levershaving a slot, a

rocker mounted extraneously in relation to the said swinging frame andprovided with a pm which is received 1n the slot aforesaid,

whereby the swinging of the frame is not interfered with, and means foroperating said rocker at a predetermined time.

5. In a machine for making bungs, the combination with a swinging frame,of a cutter, means for swinging the frame toward and away from thecutter, rotary and axially movable grippers carried by the swingingframe, independent levers pivoted to the swinging frame and connected,respectively, to the grippers for shifting said grippers axially,intermediate connections between said levers, whereby the respectivegrippers are simultaneously axially shifted, one of the aforesaid levershaving a slot, a rocker mounted extraneously in relation to the saidswinging frame and provided with a pin which is received in the slotaforesaid, whereby the swinging of the frame is not interfered with, acam having a relatively long dwell, and a rod cooperating with said camand connected to the rocker aforesaid, whereby the grippers are made toretain their bite on the blank until the swinging frame has moved totrimming position and returned to normal position.

In a machine for making bungs, the combination with a shaft, of aswinging frame mounted concentrically to said shaft, whereby it isadapted to swing on the same axis as the shaft, a rotary axially movablegripper carried by said swinging frame, wheels on the shaft and on thegripper, an endless driver running around said wheels, a lever carriedby the swinging frame and cooperatively engaged with the axially movable gripper, a rocker extraneous to the swinging frame which has anadjustable connection with said lever, whereby the lever may be operatedwithout interference with the swinging of the frame, and a cutter towardand. away from which the frame is movable.

7. In a machine for making bungs, the combination with a blank gripper,of a movable blank feeder, a crank for moving said feeder to and fro, awrist pin on said crank, a reciprocating connecting rod having means toengage the wrist pin and also provided with a. lip between which and theconnecting rod the pin is received, whereby said connecting rod may bedisengaged from the wrist pin, and means for operating said connectingrod.

8. In a machine for making bungs, the combination with a blank gripper,of a movable blank feeder, a crank for moving said feeder to and fro, awrist pin on said crank, a reciprocating connecting rod having a notchadapted to receive the wrist pin and so shaped that undue pressure willdisengage the connecting rod from the wrist pin, a lip on the connectingrod between which and the rod the wrist pin is received, and means foroperating said connecting rod.

9. In a machine for making bungs, the combination with a swinging frame,and a cutter toward and away from which the frame is movable, of arotary gripper, a shaft, wheels on said shaft and gripper, an endlessoperating band connecting said wheels, means for swinging the frame, andan idler wheel stationarily positioned in relation to the swinging frameand located so that it will engage and tighten the band when theswinging frame is moved toward the cutter.

In testimony whereof, I hereunto aflix my signature in presence of twowitnesses.

MARTIN MOUL.

Witnesses OSCAR R. BOWMAN, JULIUS IV. Fisoirnn.

